From: Paul Lutus <nospam@...>
Date: 2006-12-15T03:55:11+09:00
Subject: Re: Hash/2-d array help!

Just Maz wrote:

> Jason Roelofs wrote:
>> hash = {
>>   England => [Liverpool, London, Plymouth],
>>   France => [Rennes, Paris]
>> }
>> 
>> Jason
> 
> Ah....now that's a lot simpler then I thought.
> How would I then retrieve these values?
> 
> puts hash gives error as does puts hash[England] or puts
> hash{England}...Are they counted in anyway like hash{england[1]}?

If you create a hash as the prior poster described:

>> hash = {
>>   England => [Liverpool, London, Plymouth],
>>   France => [Rennes, Paris]
>> }

Then you retrieve an ordinary array (not a hash) by using one of the keys:

array = hash["England"]

Now "array" contains [Liverpool, London, Plymouth], and you retrieve one of
them using an index number -- array[0] retrieves "Liverpool".

-- 
Paul Lutus
http://www.arachnoid.com